| 학회 |
한국재료학회 |
| 학술대회 |
2011년 봄 (05/26 ~ 05/27, 제주 휘닉스 아일랜드) |
| 권호 |
17권 1호 |
| 발표분야 |
E. Structural Materials and processing Technology(구조재료 및 공정기술) |
| 제목 |
Preparation of Hierarchically Porous Alumina Structures Using Ice-Templating Method |
| 초록 |
Porous ceramics are widely used for applications such as catalysis supports, gas distributors and filters such as DPF. For these purpose, it is important to have proper porosity controlling pore structure while maintaining mechanical and thermal properties. In this work, we have prepared the porous alumina with hierarchical pore structures. The structure is composed of macroscopically aligned porous channels with the walls of micro-sized lamellar porous ceramics by ice-templating method. Especially, the multi-layered lamellar structures of the walls are controllable by the various conditions. Therefore, we have investigated influences of the conditions on the microstructures and the properties, porosity, pore size distribution, lamellar thickness, wavelength, and orientations are characterized. Also, the compressive strength test was performed and thermal expansion coefficient was measured to determine structural integrity and thermal stability. |
| 저자 |
Dong Seok Kim, Seung Jun Lee, Do Kyung Kim
|
| 소속 |
Korea Advanced Institute of Science and Technology |
| 키워드 |
Ice-Template; Porous ceramic; Alumina;
|
| E-Mail |
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